Rotary brush.



T. W. JOHNSON.

ROTARY BRUSH.

nrmonmn FILED OCT. 7, 1907.

Patented Oct. 19,1909.

IN VENTEI WITNESSEE a W fl yr ATTDRNE' momum-mam zns WASHING UNITED STATES PATENT OFFICE.

THOMAS W. JOHNSON, OF NORTH ATTLEBORO, MASSACHUSETTS.

ROTARY BRUSH.

To all whom it may concern:

Be it known that I, THOMAS W. JOHNSON, a citizen of the United States, and resident of North Attleboro, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Rotary Brushes, of which the following is a specification.

My invention relates to an improved means for securing the bristles or wires between the clamping disks, as hereinafter set forth.

In the accompanying drawing: Figure 1 represents the side view of a rotary brush embodying improvement. Fig. 2 represents an edge view of the same. Fig. 3 represents the outer side view of one of the clamping disks. Fig. 4 represents a section of the same taken in the line 4, 4 of Fig. 3. 'Fig. 5 represents one of the folded brush elements, separate from the clamping disk. Fig. 6 represents the inner side of one of the clamping disks, showing a folded brush element in engagement with an inwardly projecting tongue of the clamping disk. Fig. 7 represents an axial section of the clamping disks secured together by means of a metal tube, one of the said disks being made plain while the other is provided with inwardly projecting tongues for securely holding the brush elements. Fig. 8 represents an axial section in which the clamping disks are each provided with the inwardly projecting tongues, and intermediate clamping disks are employed, whereby the brush will be provided with two annular rows of brush elements. Fi 9 represents an axial section showing a form of construction in which an intermediate hook plate is employed for holding an intermediate annular row of brush elements. Fig. 10 represents a face view of the said intermediate hook plate. Fig. 11 represents an edge view of the same. Fig. 12 represents an edge view of a plain clamping disk. Fig. 13 represents an edge view of a scalloped clamping disk. Fig. let represents an axial section showing the inwardly projecting tongues asfiformed upon the intermediate clamping disks of Fig. 8, instead of upon the outer clamping disks.

In the drawing, Figs. 1 and 2, A represents the bristles or wires of the brush, and B and C the clamping disks by means of which the folded brush elements are held, the

.said disks being held in their clamping position by means of the axial hollow rivet D.

As shown in the drawing the clamping disk Specification of Letters Patent.

Application filed October 7, 1907.

Patented Oct. 19, 1909.

Serial No. 396,332.

B is made plain while the opposite clamping disk C is provided with the inwardly directed tongues E, E, which are struck up integrally from the disk plate and serve to engage with the bight of the folded brush-elements G, as shown in Figs. 6 and 7. In Fig. 8 the opposite clamping disks H., H are each shown as provided with inwardly projecting tongues E, E, in combination with the intermediate disks I, I. And in Fig. 9, the said opposite clamping disks H, H, are combined with the intermediate plain disks I, I, and the intermediate hook plate J, the turned hooks K, K of which, serve to, hold the intermediate folded brush elements L in position as shown in Fig. 9. In Fig. 14 the opposite clamping disks. M, M, are both made plain, and the inwardly projecting tongues N, N, are formed upon the intermediate disks O, 0, instead of being formed upon the said opposite clamping disks, and a scalloped clamping plate P, as shown in Fig. 13, may be employed, in carrying out my invention.

The clamping disks B. and C, are hollowed at their inner sides so that the outer portion of their inner faces will clasp the brush elements G,/and hold them securely.

its outer periphery, whereby in conjunction with the circular outer portion of the face of disk, the brush elements will be securely held.

I claim as my invention:

1. A rotary brush having a clamping disk hollowed at its inner side to form a circular outer bearing portion, and provided with a central aperture, integral inwardly directed tongues struck up from the plane of the hollowed disk within its outer periphery, a hub on which said disk is mounted, a series of outwardly radiating brush elements engaged by said tongues, and means for clamping the said brush elements against the bearing face of said disk.

2. In a rotary brush, the combination of a brush head comprising oppositely arranged clamping disks and provided with inwardly projecting tongues, with folded brush elements engaged by said tongues, and means for holding said clamping disks and brush elements together.

3. In a rotary brush, the combination of a centrally apertured disk, radially disposed tuft engaging hooks struck up from the metal surrounding the aperture of the disk, a hub passing through said aperture on Which said disk is mounted, a series of outwardly radiating looped tufts engaged by said hooks, and means for clamping said tufts against said disk.

4. In a rotary brush, the combination of a centrally apertured disk, radially disposed tuft engaging hooks struck up from the metal surrounding the aperture of the disk, a hub passing through said aperture on Which said disk is mounted, a series of out- Wardly radiating looped tufts engaged by said hooks, and a second disk mounted upon said hub, Whose outer periphery engages said tufts, and clamps them against the first mentioned disk.

5. In a rotary brush, the combination of the clamping disks provided with inwardly projecting tongues, and the hook plate, With the folded brush elements engaged by said tongues, and by the hooks of the hook plate,

and means for holding the said clamping disks, hook plate and brush elements together.

THOMAS W. JOHNSON. Witnesses:

SocRATEs SOHOLFIELD, CHAs. E. SMITH. 

